期刊
ANIMAL BEHAVIOUR
卷 77, 期 5, 页码 1103-1110出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anbehav.2009.01.014
关键词
coloration; extrapair copulation; Ficedula hypoleuca; good genes hypothesis; ornament; pied flycatcher; sexual selection
资金
- Biological Interactions Graduate School
- Center of Excellence in Evolutionary Genetics and Physiology
- Emil Aaltonen Foundation
Extrapair paternity may create marked variation in the reproductive success of males and thus contribute to the evolution of sexually selected traits in socially monogamous mating systems. We examined the distribution of extrapair paternity in a passerine bird, the pied flycatcher, in relation to plumage coloration and male age. The frequency of extrapair paternity was found to be low in our study population in Southwest Finland (38 of 857 (4.4%) offspring in 25 of 191 (13%) broods). We were able to identify the sire for 53% of the extrapair young and in each case the extrapair sire was at least 2 years old. The probability of siring extrapair young was not associated with pigment-based brown-black dorsal plumage coloration, structural ultraviolet (UV) coloration or forehead patch size. The probability of being cuckolded, however, increased with decreasing UV chroma of the white wing patch. Our results thus indicate that there are multiple factors influencing when and with whom females engage in extrapair copulations. They also indicate that the male traits influencing the decision to cuckold the social mate are different from those used for choosing an extrapair mate. (C) 2009 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据